| Company | Timeline | Status | |
| Professional Engineering Projects Limited Director • Chartered Engineer | 17 Sep 1997←3 Years→6 Jun 2001 | Active | |
| R-Pad Technology Limited Secretary • Chartered Engineer | 12 Feb 1997←28 Years→Current | Active | |
| R-Pad Technology Limited Director • Chartered Engineer | 12 Feb 1997←28 Years→Current | Active | |
